buying something and found two sellers with the same item as follows, what would you do?

Seller A has feedback rating 50 at 85% with 8 negatives, 3 of which were in the last week. He has the brown widget with a BIN price of $29. Shipping is free. You glance at his feedback and see that a couple of his negs were due to the fact he supplied more common green widgets after advertising brown.

Seller B has feedback rating 500 at 100%. His brown widget is BIN $30 shipping free. He has many satisfied customers for brown widgets.

BTW, neither seller insists on paypal as the payment method